[U-Boot] [PATCH v7 05/12] mtd: uclass: add probe function
Miquel Raynal
miquel.raynal at bootlin.com
Thu Sep 6 07:08:47 UTC 2018
The user might want to trigger the probe of any MTD device, export these
functions so they can be called from a command source file.
Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
Acked-by: Jagan Teki <jagan at openedev.com>
Reviewed-by: Stefan Roese <sr at denx.de>
---
drivers/mtd/mtd-uclass.c | 16 ++++++++++++++++
include/mtd.h | 2 ++
2 files changed, 18 insertions(+)
diff --git a/drivers/mtd/mtd-uclass.c b/drivers/mtd/mtd-uclass.c
index 9ca049c437..5418217431 100644
--- a/drivers/mtd/mtd-uclass.c
+++ b/drivers/mtd/mtd-uclass.c
@@ -5,9 +5,25 @@
#include <common.h>
#include <dm.h>
+#include <dm/device-internal.h>
#include <errno.h>
#include <mtd.h>
+/**
+ * mtd_probe - Probe the device @dev if not already done
+ *
+ * @dev: U-Boot device to probe
+ *
+ * @return 0 on success, an error otherwise.
+ */
+int mtd_probe(struct udevice *dev)
+{
+ if (device_active(dev))
+ return 0;
+
+ return device_probe(dev);
+}
+
/*
* Implement a MTD uclass which should include most flash drivers.
* The uclass private is pointed to mtd_info.
diff --git a/include/mtd.h b/include/mtd.h
index 548e7f191b..6e6da3002f 100644
--- a/include/mtd.h
+++ b/include/mtd.h
@@ -19,4 +19,6 @@ static inline struct mtd_info *mtd_get_info(struct udevice *dev)
return dev_get_uclass_priv(dev);
}
+int mtd_probe(struct udevice *dev);
+
#endif /* _MTD_H_ */
--
2.17.1
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